#231B92#231B92

#231B92 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.7% C 0.182 H 273.6°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#231B92
RGB	rgb(35, 27, 146)
HSL	hsl(244, 69%, 34%)
HSV	hsv(244, 82%, 57%)
CMYK	cmyk(76%, 81.5%, 0%, 42.7%)
CIE-LAB	lab(20.89, 43.04, -62.79)
CIE-LCH	lch(20.89, 76.13, 304.43°)
OKLab	oklab(33.69% 0.0113 -0.1816)
OKLCH	oklch(33.69% 0.182 273.6)
XYZ	xyz(6.2716, 3.2159, 27.4788)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B92 #8A921B

analogous

#1B4F92 #231B92 #5F1B92

triadic

#231B92 #92231B #1B9223

tetradic

#231B92 #921B4F #8A921B #1B925F

square

#231B92 #921B4F #8A921B #1B925F

split-complementary

#231B92 #925F1B #4F921B

monochromatic

#0A082B #17115E #231B92 #2F25C6 #544ADE

Accessibility & contrast

On white

12.78

#231B92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#231B92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B92

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B92	#FFFFFF	#000000	##FFFFFF
##231B92	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003895

Deuteranopia (green-blind)

#002C90

Tritanopia (blue-blind)

#004057

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231b92;
/* rgb */ color: rgb(35, 27, 146);
/* oklch */ color: oklch(33.7% 0.182 273.6);

Tailwind

colors: {
  custom: {
    50: '#725bb3',
    500: '#231b92',
    950: '#000000',
  },
}

SCSS

$custom: #231b92;
$custom-light: #725bb3;
$custom-dark: #000000;

JSON

{
  "hex": "#231b92",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 146
  },
  "hsl": {
    "h": 244.034,
    "s": 68.786,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3369,
    "c": 0.18199,
    "h": 273.6
  },
  "luminance": 0.03217
}

Semantic roles & 50–950 ramp

primary

#231B92

secondary

#B7BF49

accent

#EC3CE0

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231B92

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →